New LED light sources and lamps for general illumination (original) (raw)

Research and development within Light Emitting Diode or LED-technology is progressing at such a speed that today single high-power LEDs exist, which can provide luminous flux of several hundreds of lumens. And that is, with efficacies that have surpassed that of incandescent bulbs and is close to the efficacy of compact fluorescent tubes. There is no doubt that LED-technology is the future lighting technology and already today LED lighting is attractive from an energy savings perspective. However, in order to take advantage of the potential energy savings it is crucial that the light quality of these new LED light sources and lamps is very high and comparable to that of incandescent light. Here we describe the results of a research and development project on new LED light sources and lamps. The project is carried out in an interdisciplinary collaboration between designers, lamp producers and researchers. We demonstrate a new LED light source with variable color temperature combined with very good color rendering properties. The design of new lighting fixtures and LED lamps is equally important and our collaboration with several designers has resulted in several new LED lamps for general illumination in residential houses.